For dry cleaning, in the place of tetrachloroethane, liquefied carbon dioxide with suitable detergen….

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For dry cleaning, in the place of tetrachloroethane, liquefied carbon dioxide with suitable detergent is an alternative solvent. What type of harm to the environment will be prevented by stopping the use of tetrachloroethane ?

Options :-

1. It causes particulate pollution

2. It causes depletion of ozone layer

3. It results in tropospheric pollution

4. Both (a) and (b)

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Answer/ Explanation

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